Portable audio device



FIG. 1 is a front perspective view of a portable audio device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken dash dot lines indicate the boundary of the claimed design and form no part of the claimed design. Other broken lines indicate unclaimed portions and form no part of the claimed design. 

CLAIM The ornamental design for a portable audio device, as shown and described. 